Steam fittings
Steam fittings – general information
Due to the hazards related to high pressure steam, the correct selection and installation of rubber hose fittings are critical to safe hose operations. Follow these basic principles:
- Always use fittings and clamps designed and intended for steam – within their rated operating parameters (pressure and temperature);
- Never crimp ferrules to attach the fittings to rubber steam hoses. Use special steam clamps that are bolted together on the hose.
- Select the fittings and suitable clamps with great care. Match the clamps to the actual outer diameter of the hose very precisely.
- Install the fittings and clamps in accordance with IT40 instruction.
- Inspect the fittings, clamps, tightening of the bolts, hose material under the clamp and near the fitting at regular intervals.
Steam fittings and clamps are made of steel or zinc-plated cast iron, stainless steel or brass. The fittings come with a serrated hose tail with a lock (collar). The clamp interlocks over this collar. The clamps are bolted together to allow the bolts to be retightened after a period of service, when the rubber on the hose deforms.
Rubber steam hoses can only be crimped with ferrules in certain cases, after a given type of hose and fittings have undergone hours of validation testing with steam, confirming the safety of such a solution and outlining the specific conditions of use. For rubber steam hoses, Tubes International recommends:
- fittings according to EN 14423 (with bolted safety clamps);
- BOSS™ system fittings (with bolted interlocking clamps)
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